Support portion of a dental delivery unit



FIG. 1 is a perspective view of a support portion of a dental instrumentdelivery unit showing my new design with broken lines illustratingunclaimed environment that form no part of the claim;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a left side elevation view thereof;

FIG. 7 is a right side elevation view thereof;

FIG. 8 is a cross-section of a right side elevation view thereof takenalong line 8—8;

FIG. 9 is another perspective view thereof with broken lines with brokenlines used to define the bounds of claimed subject matter that form nopart of the claim;

FIG. 10 is yet another perspective view thereof;

FIG. 11 is a front elevation view thereof;

FIG. 12 is a rear elevation view thereof;

FIG. 13 is a top plan view thereof;

FIG. 14 is a bottom plan view thereof;

FIG. 15 is a left side elevation view thereof; and,

FIG. 16 is a right side elevation view thereof.

The ornamental design for a support portion of a dental delivery unit,as shown and described.